In the quarterfinals, Unión beat Sporting de Gijón 4–1 thanks to a hat-trick from René Petit and a header from Agustín Amantegui.

Madrid newspaper Gran Vida's Nasarre mentions an upset by the Galicians was expected and noted the excellent quality of their players, although their lack of cohesion allowed Unión to keep possession of the ball throughout the match and win.

[3] In the second leg Madrid beat the Blanquiazules with one goal, Espanyol playing with too much restraint to take advantage of the home team according to R. Ruiz Ferry of El Sol.

The first leg was played in Huelva, with La Época and El Imparcial commenting on the locals being "stunned" by Madrid FC's "assault" in the first half.

[12][13] Real Unión's defense relied on the skill of goalkeeper Muguruza and the combination of center-backs Manuel Carrasco and José Múgica.

[12] Moments thereafter, a foul was called against Patricio Arabolaza for touching the ball with his hand in Madrid's goal area.

[12] In the last minutes of the second half Madrid's players became unable to stop their opponents attacks leaving Teus "helpless" according to Fr.

[1] The referee was seen to perform neutrally and capably by La Acción, if only left a bit taken aback by the reactions of the crowd to his calls.

[13] Eme Erro of El Liberal, however, attributed the victory of Unión to the referee and claimed he changed his mind many times on calls after the crowd's protests.